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EO 005.06 Normal Intraoral Radiographic Anatomy. UNCLASSIFIED//REL TO NATO/ISAF. Radiographic Density. Radiopacity – light on film Radiolucency - dark on film. Radiopaque vs. Radiolucent . Radiopaque : refers to a light area on the film
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EO 005.06 Normal Intraoral Radiographic Anatomy UNCLASSIFIED//REL TO NATO/ISAF
Radiographic Density • Radiopacity – light on film • Radiolucency - dark on film
Radiopaque vs. Radiolucent • Radiopaque: refers to a light area on the film • Structures that are absorbers of x-rays block the x-rays from reaching the film • The x-rays are attenuated (decreased in intensity) by absorbing structures • Fewer radiation reach the film • Dense structures are strong absorbers
Radiopaque vs. Radiolucent • Radiolucent: refers to a dark area on the film • Structures that are less dense are poor absorbers and allow more radiation to reach the film
Radiopaque vs. Radiolucent • Enamel • Cementum • Dentin • Bone • Muscle • Fat • Air Restorative and surgical materials have various densities and abilities to absorb. Metallic materials are more dense than enamel, thus appear very white on radiographs
Mental Fossa • Radiolucent depression between alveolar ridge and mental ridge